Wall oven temp off by 40-50 degrees

I have a Frigidaire wall oven (FEB24S5ASB). i noticed that foods took longer to cook than before. When I added a thermometer inside I noticed it was 40-50 degrees off (cooler) than the digital display. I replaced the temperature sensor ($28) and I am still getting the same result.

The only thing left seems to be the bake burner element but that appears to be in good shape. A physical inspection reveals no issues or damage. It also glows orange for 90% of the length (except ends near the wall which I think is normal). The bake element is $85. I don't want to just keep swapping parts. Any suggestions?

Wall oven temp off by 40-50 degrees

Until you get it figured out, set your temp 45 degrees above what's called for.
Ovens with a dial set are fully adjustable for that with a set screw on the back of the dial. I've never tried anything on one with a gigital display.